a 747 was readying to launch.. and the pilots walk in.. guided by guide dogs!

The passengers nervously snigger to each other as they close the door behind them, then realising they may be in trouble look around at each other.. until the engine starts and they sigh nervously...

as the plane taxis... it nears the end of the runway.. and seeing them not gaining air.. they start finally screaming loudly... and just at that moment.. the plane lifts off ground.. and the passengers breath a sigh of relief...

meanwhile in the cockpit... the pilot says to the co-pilot "geez i thought we were gonna crash that time... good thing they started screaming"